TAPEWORMS. The Cestodes or Tapeworms form a class of purely endoparasitic Platyelmia, characterized by their elongate shape, segmented bodies, and the absence of a digestive system.
2.- Various Forms of Tapeworms. A, Taenia echinococcus; X 12 (from Leuckart).
- MExoz0A The Merozoa, to which the ' ordinary tapeworms of man and domestic animals belong, includes the great majority of the Cestodes.
With few exceptions tapeworms select the small intestine for their station, and in this situation execute active movements of extension and contraction.
The second point of difference between tapeworms and Trematodes lies in the absence of a definitely demonstrable " brain."
But the evidence in favour of the view that tapeworms normally excrete toxin into the body of their host in such amount as to occasion disease is not generally accepted as conclusive.
- For practical purposes we have only three varieties of tapeworms to deal with as inhabitants of the human alimentary canal: Taenia saginata, the beef tapeworm; Taenia solium, the pork tapeworm; and Dibothriocephalus latus, the fish tapeworm.